I could fling you could fling he could fling we could fling you could fling they could fling
V-ing form
I could be flinging you could be flinging he could be flinging we could be flinging you could be flinging they could be flinging
Perfect
I could have flung you could have flung he could have flung we could have flung you could have flung they could have flung
V-ing perfect
I could have been flinging you could have been flinging he could have been flinging we could have been flinging you could have been flinging they could have been flinging
Negation
Simple form
I could not fling you could not fling he could not fling we could not fling you could not fling they could not fling
V-ing form
I could not be flinging you could not be flinging he could not be flinging we could not be flinging you could not be flinging they could not be flinging
Perfect
I could not have flung you could not have flung he could not have flung we could not have flung you could not have flung they could not have flung
V-ing perfect
I could not have been flinging you could not have been flinging he could not have been flinging we could not have been flinging you could not have been flinging they could not have been flinging
Interrogative form
Simple form
could I fling? could you fling? could he fling? could we fling? could you fling? could they fling?
V-ing form
could I be flinging? could you be flinging? could he be flinging? could we be flinging? could you be flinging? could they be flinging?
Perfect
could I have flung? could you have flung? could he have flung? could we have flung? could you have flung? could they have flung?
V-ing perfect
could I have been flinging? could you have been flinging? could he have been flinging? could we have been flinging? could you have been flinging? could they have been flinging?
Interro-negative form
Simple form
could I not fling? could you not fling? could he not fling? could we not fling? could you not fling? could they not fling?
V-ing form
could I not be flinging? could you not be flinging? could he not be flinging? could we not be flinging? could you not be flinging? could they not be flinging?
Perfect
could I not have flung? could you not have flung? could he not have flung? could we not have flung? could you not have flung? could they not have flung?
V-ing perfect
could I not have been flinging? could you not have been flinging? could he not have been flinging? could we not have been flinging? could you not have been flinging? could they not have been flinging?